来源: 互联网  发布时间: 2014-02-18

给数字键盘加上Done按键

默认的数字键盘没有Done按键，如下图：

 

KeyboardViewController.h

 

#import <UIKit/UIKit.h>

@interface KeyboardViewController: UIViewController {
    UITextField *textField;
}

@end

 

KeyboardViewController.m

 

#import "KeyboardViewController.h"

@implementation KeyboardViewController

- (void)loadView {
    self.view = [[UIView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];
    self.view.backgroundColor = [UIColor groupTableViewBackgroundColor];
    
    textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 200, 300, 26)];
    textField.borderStyle = UITextBorderStyleRoundedRect;
    textField.keyboardType = UIKeyboardTypeNumberPad;
    textField.returnKeyType = UIReturnKeyDone;
    textField.textAlignment = UITextAlignmentLeft;
    textField.text = @"12345";
    
    [self.view addSubview:textField];
    
    [textField release];
    
    [[NSNotificationCenter defaultCenter] addObserver:self 
                                             selector:@selector(keyboardWillShow:) 
                                                 name:UIKeyboardDidShowNotification
                                               object:nil];
}

- (void)keyboardWillShow:(NSNotification *)note {  
    UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
    doneButton.frame = CGRectMake(0, 163, 106, 53);
    doneButton.adjustsImageWhenHighlighted = NO;
    [doneButton setImage:[UIImage imageNamed:@"DoneUp.png"] forState:UIControlStateNormal];
    [doneButton setImage:[UIImage imageNamed:@"DoneDown.png"] forState:UIControlStateHighlighted];
    [doneButton addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];
    
    UIWindow *tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];
    UIView *keyboard;
    for(int i = 0; i < [tempWindow.subviews count]; i++) {
        keyboard = [tempWindow.subviews objectAtIndex:i];
		if(([[keyboard description] hasPrefix:@"<UIPeripheralHostView"] == YES) || ([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES))
            [keyboard addSubview:doneButton];
    }
}

- (void)doneButton:(id)sender {
    [textField resignFirstResponder];
}

- (void)dealloc {
    [[NSNotificationCenter defaultCenter] removeObserver:self];
    [textField release];
    [super dealloc];
}

@end

 

效果图：

    

    来源: 互联网  发布时间: 2014-02-18

一些与蓝牙有关的code

注册Recevier

IntentFilter audioStateFilter = new IntentFilter();
audioStateFilter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
audioStateFilter.addAction(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED);
mReceiver = new VoiceDialerBroadcastReceiver();
registerReceiver(mReceiver, audioStateFilter);

取消Receiver

unregisterReceiver(mReceiver);

Receiver的实现

 

private class VoiceDialerBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (action.equals(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED)) {

            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            int state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);

            if (false) Log.d(TAG, "HEADSET STATE -> " + state);

            if (state == BluetoothProfile.STATE_CONNECTED) {
                if (device == null) {
                    return;
                }
                mBluetoothDevice = device;
                updateBluetoothParameters(true);
            } else if (state == BluetoothProfile.STATE_DISCONNECTED) {
                mBluetoothDevice = null;
                updateBluetoothParameters(false);
            }
        } else if (action.equals(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED)) {
            int state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);
            int prevState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
            if (state == BluetoothHeadset.STATE_AUDIO_CONNECTED &&
                mWaitingForScoConnection) {
                // SCO channel has just become available.
                mWaitingForScoConnection = false;
                if (mWaitingForTts) {
                    // still waiting for the TTS to be set up.
                } else {
                    // we now have SCO connection and TTS, so we can start.
                    mHandler.postDelayed(new GreetingRunnable(), FIRST_UTTERANCE_DELAY);
                }
            } else if (prevState == BluetoothHeadset.STATE_AUDIO_CONNECTED) {
                if (!mWaitingForScoConnection) {
                    // apparently our connection to the headset has dropped.
                    // we won't be able to continue voicedialing.
                    if (false) Log.d(TAG, "lost sco connection");

                    mHandler.post(new ErrorRunnable(
                            R.string.headset_connection_lost));

                    exitActivity();
                }
            }
        }
    }
}

蓝牙语音识别

mBluetoothHeadset.startVoiceRecognition(mBluetoothDevice);
mBluetoothHeadset.stopVoiceRecognition(mBluetoothDevice);

 

mAdapter = BluetoothAdapter.getDefaultAdapter();
if (BluetoothHeadset.isBluetoothVoiceDialingEnabled(this) && mAdapter != null) {
    if (!mAdapter.getProfileProxy(this, mBluetoothHeadsetServiceListener,
        BluetoothProfile.HEADSET)) {
            Log.e(TAG, "Getting Headset Proxy failed");
    }
}

mAdapter.closeProfileProxy(BluetoothProfile.HEADSET, mBluetoothHeadset);

 

private BluetoothProfile.ServiceListener mBluetoothHeadsetServiceListener =
        new BluetoothProfile.ServiceListener() {
    public void onServiceConnected(int profile, BluetoothProfile proxy) {
        if (false) Log.d(TAG, "onServiceConnected");
        mBluetoothHeadset = (BluetoothHeadset) proxy;

        List<BluetoothDevice> deviceList = mBluetoothHeadset.getConnectedDevices();

        if (deviceList.size() > 0) {
            mBluetoothDevice = deviceList.get(0);
            int state = mBluetoothHeadset.getConnectionState(mBluetoothDevice);
            if (false) Log.d(TAG, "headset status " + state);

            // We are already connnected to a headset
            if (state == BluetoothHeadset.STATE_CONNECTED) {
                updateBluetoothParameters(true);
                return;
            }
        }
        updateBluetoothParameters(false);
    }

    public void onServiceDisconnected(int profile) {
        mBluetoothHeadset = null;
    }
};

 

 

Detect the connection status of a paired Bluetooth headset to the phone. In Android 3.0 (API level 11) "BluetoothHeadset" class has "isAudioConnected()" method.

adapter = BluetoothAdapter.getDefaultAdapter();

adapter.getProfileProxy(context, mProfileListener, BluetoothProfile.HEADSET);

private BluetoothProfile.ServiceListener mProfileListener =
            new BluetoothProfile.ServiceListener() {
        public void onServiceConnected(int profile, BluetoothProfile proxy) {
            if (profile == BluetoothProfile.HEADSET) {
                mBluetoothHeadset = (BluetoothHeadset) proxy;
            }
        }
        public void onServiceDisconnected(int profile) {
            if (profile == BluetoothProfile.HEADSET) {
                mBluetoothHeadset = null;
            }
       }
    };

 

Use mBluetoothHeadset to call the functions on BluetoothHeadset.java

Note: Audio Connection is different from Connection.

BluetoothProfile.ServiceListener b = new BlueToothListener();
            boolean profileProxy = BluetoothAdapter.getDefaultAdapter()
                    .getProfileProxy(Handler.bot, b, BluetoothProfile.HEADSET);


public class BlueToothListener implements ServiceListener {
        public static BluetoothHeadset headset;
        public static BluetoothDevice bluetoothDevice;
    @Override
    public void onServiceDisconnected(int profile) {// dont care
        headset = null;
    }

    @Override
    public void onServiceConnected(int profile,
            BluetoothProfile proxy) {// dont care
        try {
            Debugger.test("BluetoothProfile onServiceConnected "+proxy);
            if (proxy instanceof BluetoothHeadset)
                headset = ((BluetoothHeadset) proxy);
            else// getProfileProxy(Handler.bot, b, BluetoothProfile.HEADSET); 
                return;// ^^ => NEVER

            List<BluetoothDevice> connectedDevices = proxy
                    .getConnectedDevices();
            for (BluetoothDevice device : connectedDevices) {
                Debugger.log("BluetoothDevice found :" + device);
                bluetoothDevice = device;
                int connectionState = headset.getConnectionState(bluetoothDevice);
                Debugger.log("BluetoothHeadset connectionState "+connectionState);//2 == OK
                boolean startVoiceRecognition = headset
                        .startVoiceRecognition(device);
                if (startVoiceRecognition) {
                    Debugger
                            .log("BluetoothHeadset init Listener OK");
                    return;
                }
                else 
                    Notify.popup("Bluetooth headset can't start speech recognition");

            }
        } catch (Exception e) {
            // }
        }
    }
}

 

 

 

 

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    来源: 互联网  发布时间: 2014-02-18

游戏中动画的基础
全文请看
游戏中动画的基础
这篇文章是纯粹的个人看法。
游戏的基础是动画，想来大家都知道。这几天公司的项目都忙完了。很是无聊，所以就上网找了些资源，并写两个动画的例子。在此贴出来，让大家把砖头砸我吧。^_^
j2me midp2.0有个game的包是用来设计有游戏用的。它提供了游戏设计的基础控件，比如双缓冲，精灵，图层控制器等基础设施，这些设施可以方便我们的设计，比如双缓冲可以让游戏执行流畅，精灵等，可以更好的控制角色。
说白了。动画的效果其实就是一幅幅图片按照指定的时间一幅幅的换图片而已。
好了。看代码吧。